Cut-off apparatus for gas or liquid supply pipes.



No'. 760,595. VPMBI'PTED YPzmr'zz, 1904,.

P. W. A. WIPSEBROGK.

GUT-GPP APPARATUS P0P GAS oR-LIQUID SUPPLY PIPE'S.

APPLICATION FILED AUG. 27, 19073.

Patented May 24, 19011.v

" v[lruTi'eDfi PATENTfOFIucE.

lF'sieDaeron'' WILLIAM QA. `:w1SEBROCK;` F jNEW/Y'OR'K-ia 4N- `YI ifICUT-QFF' APPARATUS FQB'GAS on L'IQUiD"s UiPLv` PIPVEQS.

sPEcIFIcArIoN forming paie of Letters Patent No.-7e0,5e5, dated May24,-' 1904. 1

y, 'Appleman flied Augusta?, 1903. y serial No. 170,901.v 1N@ maar).

Toa/ZZ whom it 11e/,Ly concern,.- '1

Be it known that I, FREDERICKWILLiAiu vVVIESEIBROCK, a citizenof theUnited States, re-

siding at lNew York cit'y,-BronX, county' and State of New York, haveinvented certain newl and useful vImprovements in (Jut-oif Apparatus forGas and Liquid Supply Pipes,` of which `the fol-lowing is aspecification. s

This inventionlrelates to an improvedcutoff apparatusadapted to beijttedv into apipeline that carriessteamgas, r liquid Aunder pressure.The apparatus is so constructed that the valve which controls theilowyof 'the steam, &c., is slowly but positively closed incaseof'breakagelor leakage, so that sudden yjars are avoided.

,In the accompanying drawings,'Figure 1 is a vertical longitudinalsection of my improved cut-oif apparatus'gand Fig. A2,''across-section,partly broken away, on line 2 2, Fig.l 1. l Y The lettera representsahousing adapted to be iitted into a length'of pipe-line A B, to

" which it is `connectedin suitable manner. The

\ pipe-line is adapted to convey steam, gas, or

a liquid under pressure from a boiler or reservoir to the place ofconsumption. Back-of its inlet end the housing a is iianged, as at a',for the reception of a threaded ring Z, which constitutes a valve-seat.Against this seatA is adapted to bear an outlet-valve o, mounted on avalve-stem o', which is guided within abearing Z of seat Z) and abearing OZ of a rest 0Z. Upon the housing a is mounted a cylinder e,

containing a piston f, the rod f of which cylinder e' is connectedl to avalve-chest a', containing the slide-valve 0", movable on spindle 2. Thevalve isoperated by hand-lever j, ful* crumed at j and engagingvalve-tappets 3.

The valve-chest obtains vits steam, &c. by an inlet-port /a'that entershousing a in front of valve c. From the chest 'Z one exitport 7c leadsto the interior of housing Z back of valve c, while a second yexit-portk2 leads from the The chest to the upper"sectionof the cylinder@abovepistonf. .u i U The housing is separated from the cylinder by apartition Z, havingfa central opening for the passage and guidance ofthe 'lower section of ypiston-rod f. rod section is pivoted at m theupper end of a linkfm, to the lower end of which are pivoted at m2 apair oflinksm`3 mi. ,The link m3 is also pivoted at mito the valve-stemo', while the link 17a/*is pivoted atm to a support'm.-

The partition Z-is provided with oneorm'ore ports or openings` Z', whichmay be closed by `upwardly-,opening,weighted orlspring-infinencedcheckvalves n.

4Within the rear sectionof housing aisiittedan ejector composed Aofanozzlejp and a surrounding chamber p. kvThe nozzle p is arrangedL in.thefdirection of the How ofl the yThe operation is as follows: Theapparatus is secured within pipe-line A B, preferably in proximity tothe boiler, reservoir, &c. so that the pressure from the latter tends toclose the valve o. is raised to open port lo and close port 702, whilethe cock z/ is opened. Steam will thus How into housing a to raisethepressure within the housing and pipe-line B. The steam will openvalve fn, and enter the lower end of cylinder e below piston f. When thepressure of the steam against the innerface ofvalve c is equal about tothe pressure against the outer face of thevvalve and the valve is thusbalanced, the piston f will be raised and will thus open the valvec bylinks m 177.37704. When the valve has thus been opened, the vent 7L isclosed, and the valve a" is lowered to close port k and open port k2. Inthis way steam is admitted above piston f, and the pressure on bothsides of the piston is equalized. Thus the entire apparatus remainsbalanced, the tendency ofthe piston to descendfby gravity .beingcounteracted by To this lower piston-l To turn on the supply, the valvez" weight g. When the piston has arrived at its maximum elevation, thevalve n, will close by gravity, and the apparatus is now set to conveythe steam, &c. from the boilerthrough the pipe-line and housing a to theplace of consumption. y

Under normal conditions the valve c will remain open and the piston fwill remain raised, so that a uniform volume of steam is delivered.Under these normal conditions the jet passing through the nozzle p ofejector P will not create any suction in channel r.

If a break or leakage occurs in the rear pipesection B or the partsconnected therewith, the velocity of the steam passing through theapparatus is increased to a considerable extent, so as to create apowerful current in nozzle p. This current will suck the steam fromcylinder e below piston f, the steam iowing through channel r, chamberp', and pipe q into pipe B. The valve n is so weighted that the smalldifference oi' pressure thus created between housing a and lower part ofcylinder e is not suliicient to li ft the valve. As the steampressure inthe cylinder is thus reduced below the piston, the excess ofsteam-pressure above the piston causes the latter to gradually descendand to thus gradually close the valve c, such closing being assisted bythe impetus of the steamjet against the outer face of the valve.

It will be seen that by my invention a slow movement of the piston and acorresponding slow movement of the valve either while opening or whileclosing is obtained. In this way sudden jars to the apparatus or thepipe and its connections are prevented, while a positive and reliableoperation of the device is insured.

What I claim is- 1. In a cut-off apparatus, the combination of a housingwith a cylinder, an intervening partition, an outlet-valve, a piston inthe cylinder connected to said valve, and an ejector communicating withthe cylinder, substantially as specified.

2. In a cut-01T apparatus, the combination of a housing with a cylinder,an intervening partition,'an outlet-valve, a piston in the cylinderconnected to said valve, a nozzle in the housing, a surrounding chamber,and means for connecting said chamber to the cylinder between piston andpartition, substantially as specified.

3. In a cut-off apparatus, the combination of a housing with a cylinder,an intervening partition, an outlet-valve, a piston in the cylinderconnected to said valve, an ejector communicating with the cylinderbelow the piston, a port entering the housing, a second port enteringthe cylinder above the piston, and a valve for controlling said ports,substantially as specified.

4. In a cut-off apparatus, the combination of a housing with a cylinder,an intervening` partition, an outlet-valve, a piston in the cylinderconnected to said valve, an ejector colnmunicating with the cylinderbelow the piston, a port entering the housing, a second port enteringthe cylinder above the piston, a valve controlling said ports, and avent in the upper end of the cylinder, substantially as speciied.

Signed by me at New York city, (Manhattan,)New York, this 21st day ot'August, 1903.

FREDERICK WILLIAM A. WIESEBROCK.

Witnesses:

WILLIAM SCHULZ, FRANK v. BRIESEN.

